[evince/BUG_has_javascript: 64/65] EvDocumentInfo: add new field "contains_js"

[Nelson Ben <nbenitez src gnome org>]

commit c5894633ebffeabfd3e7e67ec25aeeb92763cd57
Author: Nelson Benítez León <nbenitezl gmail com>
Date:   Mon Jul 13 16:31:11 2020 -0400

    EvDocumentInfo: add new field "contains_js"
    
    and implement it for poppler backend. This field
    tells the user if the pdf has any javascript in it.
    
    This depends on the new poppler-glib api (0.90+):
    gboolean poppler_document_has_javascript (PopplerDocument *document);

 backend/pdf/ev-poppler.cc      |  8 ++++++++
 libdocument/ev-document-info.h | 11 ++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)
---
diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index 216052a3..921514ff 100644
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -1079,6 +1079,7 @@ pdf_document_get_info (EvDocument *document)
                            EV_DOCUMENT_INFO_N_PAGES |
                            EV_DOCUMENT_INFO_SECURITY |
                            EV_DOCUMENT_INFO_PAPER_SIZE |
+                           EV_DOCUMENT_INFO_CONTAINS_JS |
                            EV_DOCUMENT_INFO_LICENSE;
 
        g_object_get (PDF_DOCUMENT (document)->document,
@@ -1206,6 +1207,13 @@ pdf_document_get_info (EvDocument *document)
 
        info->linearized = linearized ? g_strdup (_("Yes")) : g_strdup (_("No"));
 
+#if POPPLER_CHECK_VERSION(0, 90, 0)
+       info->contains_js = poppler_document_has_javascript (PDF_DOCUMENT (document)->document) ?
+                           EV_DOCUMENT_CONTAINS_JS_YES : EV_DOCUMENT_CONTAINS_JS_NO;
+#else
+       info->contains_js = EV_DOCUMENT_CONTAINS_JS_UNKNOWN;
+#endif
+
        return info;
 }
 
diff --git a/libdocument/ev-document-info.h b/libdocument/ev-document-info.h
index e857b4b1..ebeeea36 100644
--- a/libdocument/ev-document-info.h
+++ b/libdocument/ev-document-info.h
@@ -55,6 +55,13 @@ typedef enum
        EV_DOCUMENT_MODE_PRESENTATION = EV_DOCUMENT_MODE_FULL_SCREEN /* Will these be different? */
 } EvDocumentMode;
 
+typedef enum
+{
+       EV_DOCUMENT_CONTAINS_JS_UNKNOWN,
+       EV_DOCUMENT_CONTAINS_JS_NO,
+       EV_DOCUMENT_CONTAINS_JS_YES
+} EvDocumentContainsJS;
+
 typedef enum
 {
        EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR = 1 << 0,
@@ -100,7 +107,8 @@ typedef enum
        EV_DOCUMENT_INFO_N_PAGES = 1 << 14,
        EV_DOCUMENT_INFO_SECURITY = 1 << 15,
        EV_DOCUMENT_INFO_PAPER_SIZE = 1 << 16,
-       EV_DOCUMENT_INFO_LICENSE = 1 << 17
+       EV_DOCUMENT_INFO_LICENSE = 1 << 17,
+       EV_DOCUMENT_INFO_CONTAINS_JS = 1 << 18
 
 } EvDocumentInfoFields;
 
@@ -126,6 +134,7 @@ struct _EvDocumentInfo
        double paper_height;
        double paper_width;
        EvDocumentLicense *license;
+       EvDocumentContainsJS contains_js; /* wheter it contains any javascript */
 
        /* Mask of all the valid fields */
        guint fields_mask;